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#1 |
Engine n00b
Join Date: Feb 2008
Location: Austin
Posts: 1,031
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Engine options and decisions to be made
I could have sworn I had a 350. Everyone who saw it figured the same.
Turns out, my V1125TAI is a 1970 307 small block, 2bbl, 2 bolt main. Ill be damned. Wonder if this means I picked the wrong plugs, or if the shop tuned it differently. I had a skip white HEI distrib installed and 3 weeks after i blew the engine (ring) So, the plan was to check the block, and man was I shocked to see its a 307. Good news is, its an original and numbers matching block. Bad news is, its not a 350, killing my hopes of a 383 without swapping blocks. So the questions - what can a 307 produce? Is it financially stupid to work a 307, or should I start shopping for 350/400's? |
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#2 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,271
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Re: Engine options and decisions to be made
That's a tough call. Is keeping the original number matching block all that important to you? I mean is the truck something special that keeping the original engine would make it worth more in someone's eye, other than you? High optioned? Low production?
If HP is what you are after you will want to store that block in the shed and go find a 350 or 400 to start with. Not saying you can't get more hp out of the 307, just that you will spend a lot to make less than starting with a larger engine.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#3 | |
Engine n00b
Join Date: Feb 2008
Location: Austin
Posts: 1,031
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Re: Engine options and decisions to be made
Quote:
Sounds like a 350/383 is still the route to go. Trying to decide now between: Cheap: http://www.jegs.com/p/GM+Performance/755609/10002/-1 Mild: http://www.jegs.com/p/GM+Performance/749872/10002/-1 Wild: http://www.jegs.com/p/GM+Performance/969813/10002/-1 |
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Engine options and decisions to be made
A 307 can be made into a nice little daily driver, and it'll hold its own. However, it won't be a race car.
The 307 can knock down some VERY impressive MPG numbers though. |
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#5 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Engine options and decisions to be made
Here's one you might want to look at, it has Vortec heads and a roller cam. You'd have to run an electric fuel pump though.
http://store.summitracing.com/partde...530282&FROM=MG
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Beat it to fit, Paint it to match... ![]() Last edited by Sinister; 12-14-2008 at 12:45 PM. |
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#6 |
Chevy One
Join Date: Nov 2006
Location: The BeeHive State
Posts: 132
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Re: Engine options and decisions to be made
Another option is to find a 4 bolt 350 and use the 307 crank to make a 4 bolt 327.
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Chevy One ![]() 67 1/2 Two-on-the-Floor 67 Nova 2Dr Sedan 03 Monte Carlo I'M NOT OLD, JUST A CLASSIC!!! |
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